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What is the slope of the line (y=-x+7)?
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Answer and explanation
Correct answer: -1
The slope-intercept form of a line is y=mx+c, where m is the slope. The equation y=-x+7 can be written as y=(-1)x+7, so its slope is -1. Here, 7 is the y-intercept, not the slope. Exam tip: identify the coefficient of x and always retain its sign.
Frequently asked questions
What is the correct answer to this question?
-1
Why is this the correct answer?
The slope-intercept form of a line is y=mx+c, where m is the slope. The equation y=-x+7 can be written as y=(-1)x+7, so its slope is -1. Here, 7 is the y-intercept, not the slope. Exam tip: identify the coefficient of x and always retain its sign.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Slope and y-intercept.
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